2167444161 has 6 divisors (see below), whose sum is σ = 3130752690. Its totient is φ = 1444962768.

The previous prime is 2167444157. The next prime is 2167444199. The reversal of 2167444161 is 1614447612.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1569348225 + 598095936 = 39615^2 + 24456^2 .

It is not a de Polignac number, because 2167444161 - 2² = 2167444157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2167444061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 120413556 + ... + 120413573.

It is an arithmetic number, because the mean of its divisors is an integer number (521792115).

Almost surely, 2^2167444161 is an apocalyptic number.

It is an amenable number.

2167444161 is a deficient number, since it is larger than the sum of its proper divisors (963308529).

2167444161 is a wasteful number, since it uses less digits than its factorization.

2167444161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240827135 (or 240827132 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2167444161 is about 46555.8176923142. The cubic root of 2167444161 is about 1294.1441075044.

The spelling of 2167444161 in words is "two billion, one hundred sixty-seven million, four hundred forty-four thousand, one hundred sixty-one".